Livestock Industry and Agriculture
Pigs are another group of animals that can potentially be consumers of microalgae. As early as 1966, a mixture of Chlorella and Scenedesmus was used to replace different proportions of soybean meal and cotton in pig formulas, without appreciable differences in the conversion rate. Scenedesmus was also used to replace the alfalfa meal in pig feed at a 12% ratio of the ration, obtaining acceptable results.
Tests carried out in 1960 to determine the nutritive value of Chlorella, Scenedesmus obliquus and S. quadricauda, produced in wastewater, indicated that in sheep the digestibility coefficient of the hydrocarbon fraction of algae was lower than that of hay, due to the lower digestibility of the microalgae fiber. In beef, a similar trend was observed
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